<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{path:'/home'}">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userList" max-height="450" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini"
                       @click="removeUserById(scope.row.id)"></el-button>
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
                     :current-page="queryInfo.pagenum" :page-size="queryInfo.pagesize" :total="total"
                     :page-sizes="[1, 2, 5, 10]" layout="total, sizes, prev, pager, next, jumper"></el-pagination>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible=false">取消</el-button>
        <el-button type="primary" @click="addUser">添加</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible=false">取消</el-button>
        <el-button type="primary" @click="editUserIfo">确认</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择角色">
            <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id"></el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible=false">取消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
  export default {
    data () {
      // 自定义邮箱校验规则
      const checkEmail = (rule, value, callback) => {
        const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
        if (regEmail.test(value)) return callback()
        callback(new Error('请输入合法的邮箱'))
      }
      // 自定义手机号校验规则
      const checkMobile = (rule, value, callback) => {
        const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
        if (regMobile.test(value)) return callback()
        callback(new Error('请输入合法的手机号'))
      }
      return {
        // 获取用户列表
        queryInfo: { query: '', pagenum: 1, pagesize: 5 },
        userList: [],
        total: 0,
        // 控制添加用户对话框的显示
        addDialogVisible: false,
        // 添加用户表单
        addForm: { username: 'root', password: '', email: '', mobile: '15634356768' },
        // 校验规则
        addFormRules: {
          username: [{ required: true, message: '请输入用户名', trigger: 'blur' },
            { min: 3, max: 10, message: '用户名的长度在3~10个字符之间', trigger: 'blur' }],
          password: [{ required: true, message: '请输入密码', trigger: 'blur' },
            { min: 6, max: 15, message: '用户名的长度在6~15个字符之间', trigger: 'blur' }],
          email: [{ required: true, message: '请输入邮箱', trigger: 'blur' },
            { validator: checkEmail, trigger: 'blur' }],
          mobile: [{ required: true, message: '请输入手机', trigger: 'blur' },
            { validator: checkMobile, trigger: 'blur' }]
        },
        editDialogVisible: false,
        editForm: {},
        editFormRules: {
          email: [{ required: true, message: '请输入邮箱', trigger: 'blur' },
            { validator: checkEmail, trigger: 'blur' }],
          mobile: [{ required: true, message: '请输入手机', trigger: 'blur' },
            { validator: checkMobile, trigger: 'blur' }]
        },
        // 分配角色对话框开关
        setRoleDialogVisible: false,
        // 即将分配权限的角色Id
        userInfo: '',
        // 所有角色的数据列表
        rolesList: [],
        // 以选中的角色 id
        selectedRoleId: ''
      }
    },
    created () {
      this.getUserList()
    },
    methods: {
      async getUserList () {
        const { data: res } = await this.$http.get('users', { params: this.queryInfo })
        if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
        this.userList = res.data.users
        this.total = res.data.total
      },
      // 监听 pageSize 的事件
      handleSizeChange (newSize) {
        this.queryInfo.pagesize = newSize
        this.getUserList()
      },
      // 监听 currentPage 的事件
      handleCurrentChange (newPage) {
        this.queryInfo.pagenum = newPage
        this.getUserList()
      },
      // 监听 switch 开关状态的改变
      async userStateChanged (userInfo) {
        const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
        if (res.meta.status !== 200) {
          userInfo.mg_state = !userInfo.mg_state
          return this.$message.error(res.meta.msg)
        }
        this.$message.success(res.meta.msg)
      },
      // 监听添加用户对话框关闭事件
      addDialogClosed () {
        this.$refs.addFormRef.resetFields()
      },
      addUser () {
        this.$refs.addFormRef.validate(async validate => {
          if (!validate) return
          const { data: res } = await this.$http.post('users', this.addForm)
          if (res.meta.status !== 201) return this.$message.error(res.meta.msg)
          this.$message.success(res.meta.msg)
          this.addDialogVisible = false
          this.getUserList()
        })
      },
      // 监听修改用户对话框的关闭事件
      editDialogClosed () {
        this.$refs.editFormRef.resetFields()
      },
      // 展示编辑用户的对话框
      async showEditDialog (id) {
        const { data: res } = await this.$http.get(`users/${id}`)
        if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
        this.editForm = res.data
        this.editDialogVisible = true
      },
      // 修改用户并提交
      async editUserIfo () {
        this.$refs.editFormRef.validate(async valid => {
          if (!valid) return
          const { data: res } = await this.$http.put(`users/${this.editForm.id}`, this.editForm)
          if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
          // 1.关闭对话框
          this.editDialogVisible = false
          // 2.刷新列表
          this.getUserList()
          // 3.提示修改成功
          this.$message.success(res.meta.msg)
        })
      },
      // 删除指定ID对应的用户
      async removeUserById (id) {
        const confirmResult = await this.$confirm('此操作将永久删除该用户，是否继续？', '提示',
          { confirmButtonText: '确定', cancelButtonText: '取消', type: 'warning' }).catch(err => err)
        if (confirmResult !== 'confirm') return this.$message.info('已取消删除')
        const { data: res } = await this.$http.delete(`users/${id}`)
        if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
        this.getUserList()
        this.$message.success(res.meta.msg)
      },
      // 展示分配角色对话框
      async setRole (userInfo) {
        this.userInfo = userInfo
        const { data: res } = await this.$http.get('roles')
        if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
        this.rolesList = res.data
        this.setRoleDialogVisible = true
      },
      // 点击按钮分配角色
      async saveRoleInfo () {
        if (!this.selectedRoleId) return this.$message.error('请选择要分配的角色！')
        const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
        if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
        this.getUserList()
        this.setRoleDialogVisible = false
        this.$message.success(res.meta.msg)
      },
      // 监听分配角色对话框的关闭事件
      setRoleDialogClosed () {
        this.selectedRoleId = ''
        this.userInfo = {}
      }
    }
  }
</script>
<style lang="less" scoped></style>
